Convert any video directly from a URL
Append ?url= with the address of an MP4 (or MOV, WebM, MKV, AVI, M4V) and this page will fetch the video server-side and open it in the MP4 to MP3 converter — no local file, no re-upload. Because the fetch happens on our end, your browser's CORS rules don't get in the way.
How to use the by-URL route
Single video
Append ?url= with the full video URL. When the page loads, we fetch the video, hand it to the converter, and drop you into the workspace with your settings ready to go.
https://mytools.com/video/mp4-to-mp3/by-url?url=https://example.com/clip.mp4
Multiple videos
Batching multiple videos via ?url= is not supported on this route yet — pass one URL at a time. For batches, use the main MP4 to MP3 Converter (up to 50 files per batch).
Requirements
| Protocol | http:// or https:// |
| Content-Type | video/* or application/octet-stream |
| Formats | MP4, M4V, MOV, WebM, MKV, AVI — same as the main tool |
| Source | Any publicly accessible URL — no authentication headers sent |
Server-side fetch · No CORS restrictions · Works with any public video URL
Why use the by-URL route?
Skip the upload step
When your video already lives at a URL — a CDN, an object store, a team file-share — pass the URL directly. No 'download the file just to upload it again' detour.
No CORS restrictions
The video is fetched server-side, so the browser's cross-origin rules don't apply. URLs that would fail in a normal client-side fetch work here.
Same MP3 settings
Once the video loads, you get the same three controls as the regular tool — bitrate, sample rate, and channels — applied exactly the same way.
Shareable and linkable
The URL is the session. Share the /by-url?url=… link with a teammate and they open the same video in the converter, ready to convert, in a single click.
Fits into automated workflows
Construct the URL from a script, a Zapier step, a browser extension — anywhere you have a video URL and want to hand it off to a human for a quick conversion.
Your video isn't stored
We fetch the URL, stream the bytes straight into your browser session, and forget them. Nothing is written to disk on our end, nothing is logged beyond standard request metadata.
Build the URL
Start with /video/mp4-to-mp3/by-url, append ?url= and the full address of your video.
The video loads automatically
The page fetches the video server-side and opens the converter workspace with the file already in the list.
Pick settings and download
Choose your bitrate, sample rate, and channels — or keep the defaults — click Convert to MP3, and download the MP3 when it's ready.
- Videos are never stored — fetched and forwarded in a single request.
- URLs and videos are not logged, inspected, or retained.
- No sign-up needed — construct the URL and go.